Grinding disc



FIG. 1 is a perspective view of a grinding disc showing my new design;

FIG. 2 is a top side plan view of the grinding disc of FIG. 1 ;

FIG. 3 is a bottom side plan view of the grinding disc of FIG. 1 ;

FIG. 4 is a right side elevational view of the grinding disc of FIG. 1 ;

FIG. 5 is a left side elevational view of the grinding disc of FIG. 1 ;

FIG. 6 is a front side elevational view of the grinding disc of FIG. 1 ; and,

FIG. 7 is a rear side elevational view of the grinding disc of FIG. 1 .

The broken lines shown in the drawings illustrate portions of the grinding disc that form no part of the claimed design. 

CLAIM The ornamental design for a grinding disc, as shown and described. 